Pressure and temperature variation of the depolarized light scattering spectra of the fragile glass-former liquid salol

被引：0
|
作者：
G. Pratesi
A. Bellosi
F. Barocchi
机构：
[1] Istituto Nazionale per la Fisica della Materia,
[2] L.go E. Fermi 2,undefined
[3] 50125,undefined
[4] Florence,undefined
[5] Italy,undefined
[6] Universitá di Firenze,undefined
[7] L.go E. Fermi 2,undefined
[8] 50125,undefined
[9] Florence,undefined
[10] Italy,undefined
[11] Laboratorio Europeo di Spettroscopia Nonlineare,undefined
[12] L.go E. Fermi 2,undefined
[13] 50125,undefined
[14] Florence,undefined
[15] Italy,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2000年 / 18卷
关键词：
PACS. 64.70.Pf Glass transitions - 07.35.+k High-pressure apparatus and techniques; shock tubes; diamond anvil cells - 78.35.+c Brillouin and Rayleigh scattering; other light scattering;
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摘要：
The pressure and temperature dependences of the depolarized light scattering spectra of salol have been measured at isobaric condition P = 1 bar for T between 328 and 393 K, and at isothermal condition T = 343 K for P between 1 and 625 bar, i.e. outside the metastable liquid region. The experimental results for both the α- and β-relaxations can be well described by the Mode Coupling Theory. The independence of the power-law parameters a, and consequently b and γ, from the thermodynamic variables T and P is demonstrated.The critical temperature Tc at 1 bar and the critical pressure Pc at T = 343 K have been determined from the normal liquid state.
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页码：283 / 287
页数：4
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